Across
- 5. The biggest animal in the world
- 6. The tallest waterfall in the world
- 7. The very first plane
- 8. How many hours does a human sleep
- 9. The fastest land animal
- 10. The tallest mountain in the world
Down
- 1. The slowest animal in the world
- 2. The fastest bird in the world
- 3. The fastest fish in the world
- 4. The biggest shark